diff --git a/src/components/game-distribution/GameCover.tsx b/src/components/game-distribution/GameCover.tsx
index 78c542ec9..3ed8a64bb 100644
--- a/src/components/game-distribution/GameCover.tsx
+++ b/src/components/game-distribution/GameCover.tsx
@@ -15,15 +15,20 @@ export function GameCover({
   compact = false,
   priority = false,
   objectKey,
+  owner = false,
 }: {
   game: GameDistributionGame;
   compact?: boolean;
   /** 首屏 hero 用的封面立即加载，列表卡片保持延迟加载。 */
   priority?: boolean;
   objectKey?: string | null;
+  /** 作者自己的作品列表传 `owner`：未发布 / 待审 / 被驳回的封面也能换签预览。 */
+  owner?: boolean;
 }) {
   const targetKey = (objectKey ?? game.coverObjectKey ?? '').trim();
-  const { resolvedUrl } = useGameDistributionMediaReadUrl(targetKey);
+  const { resolvedUrl } = useGameDistributionMediaReadUrl(targetKey, {
+    gameId: owner ? game.id : undefined,
+  });
   return (
     <div
       className={`game-cover ${compact ? 'game-cover--compact' : ''}`}
diff --git a/src/components/game-distribution/GamePublishPage.test.tsx b/src/components/game-distribution/GamePublishPage.test.tsx
index e104893ce..852431f3f 100644
--- a/src/components/game-distribution/GamePublishPage.test.tsx
+++ b/src/components/game-distribution/GamePublishPage.test.tsx
@@ -39,6 +39,7 @@ vi.mock('../../services/gameDistributionClient', () => ({
   createGame: vi.fn(),
   createGameVersion: vi.fn(),
   getGameDistributionMediaReadUrl: vi.fn().mockResolvedValue(''),
+  getOwnerGameDistributionMediaReadUrl: vi.fn().mockResolvedValue(''),
   getGameVersion: vi.fn(),
   listMyGames: vi.fn(),
   submitGameVersion: vi.fn(),
@@ -699,6 +700,7 @@ test('更新模式在既有 gameId 下创建新版本并沿用公开修订号',
   await waitFor(() =>
     expect(resolveGamePublishImagePreview).toHaveBeenCalledWith(
       'game-distribution/cover/old.png',
+      'game-1',
     ),
   );
   expect(screen.queryByText(/本次发布需要重新选择一次封面图片/u)).toBeNull();
@@ -791,6 +793,7 @@ test('线上封面没有冻结快照时沿用游戏行封面对象键', async ()
   await waitFor(() =>
     expect(resolveGamePublishImagePreview).toHaveBeenCalledWith(
       'game-distribution/cover/legacy.png',
+      'game-1',
     ),
   );
   const file = await buildZipFile();
diff --git a/src/components/game-distribution/MyGamesPage.test.tsx b/src/components/game-distribution/MyGamesPage.test.tsx
index b8132f917..e9502432f 100644
--- a/src/components/game-distribution/MyGamesPage.test.tsx
+++ b/src/components/game-distribution/MyGamesPage.test.tsx
@@ -9,7 +9,9 @@ import {
   cancelGameVersion,
   deleteMyGame,
   type GameDistributionMyGame,
+  getGameDistributionMediaReadUrl,
   getGameVersion,
+  getOwnerGameDistributionMediaReadUrl,
   listMyGames,
   loadVersionRecoveryActions,
   submitGameVersion,
@@ -23,6 +25,7 @@ vi.mock('../../services/gameDistributionClient', () => ({
   cancelGameVersion: vi.fn(),
   deleteMyGame: vi.fn(),
   getGameDistributionMediaReadUrl: vi.fn().mockResolvedValue(''),
+  getOwnerGameDistributionMediaReadUrl: vi.fn().mockResolvedValue(''),
   getGameVersion: vi.fn(),
   listMyGames: vi.fn(),
   loadVersionRecoveryActions: vi.fn(),
@@ -123,6 +126,8 @@ beforeEach(() => {
   vi.mocked(cancelGameVersion).mockReset();
   vi.mocked(deleteMyGame).mockReset();
   vi.mocked(getGameVersion).mockReset();
+  vi.mocked(getOwnerGameDistributionMediaReadUrl).mockReset();
+  vi.mocked(getOwnerGameDistributionMediaReadUrl).mockResolvedValue('');
   vi.mocked(listMyGames).mockReset();
   vi.mocked(loadVersionRecoveryActions).mockReset();
   vi.mocked(submitGameVersion).mockReset();
@@ -172,6 +177,23 @@ test('展示审核中状态与驳回理由', async () => {
   expect(screen.getByText('驳回理由：封面需要替换')).toBeTruthy();
 });
 
+test('作者自有作品封面走 owner 作用域换签，未发布也能预览', async () => {
+  vi.mocked(listMyGames).mockResolvedValue([
+    createGame({ coverObjectKey: 'game-distribution/cover/mine.png' }),
+  ]);
+
+  renderPage(createAuthValue());
+
+  await waitFor(() =>
+    expect(getOwnerGameDistributionMediaReadUrl).toHaveBeenCalledWith(
+      'game-1',
+      'game-distribution/cover/mine.png',
+      undefined,
+    ),
+  );
+  expect(getGameDistributionMediaReadUrl).not.toHaveBeenCalled();
+});
+
 test('下架已公开游戏会带上当前 publicationRevision', async () => {
   const game = createGame({
     status: 'published',
diff --git a/src/components/game-distribution/MyGamesPage.tsx b/src/components/game-distribution/MyGamesPage.tsx
index d8a8fffa6..ef8511829 100644
--- a/src/components/game-distribution/MyGamesPage.tsx
+++ b/src/components/game-distribution/MyGamesPage.tsx
@@ -494,7 +494,7 @@ export function MyGamesPage({
             const isHistoryOpen = expandedGameId === game.id;
             return (
               <article key={game.id} className="my-game-card">
-                <GameCover game={game} compact />
+                <GameCover game={game} compact owner />
                 <div className="my-game-card__body">
                   <div className="my-game-card__heading">
                     <button
diff --git a/src/components/game-distribution/gamePublishAssets.ts b/src/components/game-distribution/gamePublishAssets.ts
index d455999cd..a9d15be57 100644
--- a/src/components/game-distribution/gamePublishAssets.ts
+++ b/src/components/game-distribution/gamePublishAssets.ts
@@ -1,4 +1,7 @@
-import { getGameDistributionMediaReadUrl } from '../../services/gameDistributionClient';
+import {
+  getGameDistributionMediaReadUrl,
+  getOwnerGameDistributionMediaReadUrl,
+} from '../../services/gameDistributionClient';
 
 /** 游戏截图数量上限与服务端 `MAX_GAME_SCREENSHOTS` 保持一致。 */
 export const MAX_GAME_SCREENSHOTS = 6;
@@ -89,15 +92,25 @@ export function revokeGamePublishImagePreview(
   }
 }
 
-/** 作者续发/编辑时按对象键换签预览；失败返回空字符串，由调用方回退占位。 */
-export async function resolveGamePublishImagePreview(objectKey: string) {
+/** 作者续发/编辑时按对象键换签预览；传 gameId 走 owner 路由，未发布作品也能预览。 */
+export async function resolveGamePublishImagePreview(
+  objectKey: string,
+  gameId?: string,
+) {
   const normalizedKey = objectKey.trim();
   if (!normalizedKey) return '';
+  const normalizedGameId = gameId?.trim() ?? '';
   try {
-    return await getGameDistributionMediaReadUrl(
-      normalizedKey,
-      GAME_PUBLISH_IMAGE_PREVIEW_EXPIRE_SECONDS,
-    );
+    return normalizedGameId
+      ? await getOwnerGameDistributionMediaReadUrl(
+          normalizedGameId,
+          normalizedKey,
+          GAME_PUBLISH_IMAGE_PREVIEW_EXPIRE_SECONDS,
+        )
+      : await getGameDistributionMediaReadUrl(
+          normalizedKey,
+          GAME_PUBLISH_IMAGE_PREVIEW_EXPIRE_SECONDS,
+        );
   } catch {
     return '';
   }
diff --git a/src/components/game-distribution/gamePublishMediaDefaults.ts b/src/components/game-distribution/gamePublishMediaDefaults.ts
index 4430550f2..010988832 100644
--- a/src/components/game-distribution/gamePublishMediaDefaults.ts
+++ b/src/components/game-distribution/gamePublishMediaDefaults.ts
@@ -53,7 +53,10 @@ export async function applyVersionMediaDefaults(
     })),
   );
 
-  const coverPreview = await resolveGamePublishImagePreview(coverObjectKey);
+  const coverPreview = await resolveGamePublishImagePreview(
+    coverObjectKey,
+    detail.game.id,
+  );
   if (apply.isCancelled()) return;
   if (coverPreview) {
     // 只在作者还没换图、且预览仍为空时补上签名地址，避免覆盖作者的新选择。
@@ -64,7 +67,10 @@ export async function applyVersionMediaDefaults(
     );
   }
   for (const [index, objectKey] of screenshotObjectKeys.entries()) {
-    const preview = await resolveGamePublishImagePreview(objectKey);
+    const preview = await resolveGamePublishImagePreview(
+      objectKey,
+      detail.game.id,
+    );
     if (apply.isCancelled() || !preview) continue;
     apply.setScreenshots((current) =>
       current.map((item, itemIndex) =>
diff --git a/src/components/game-distribution/useGameDistributionMediaReadUrl.ts b/src/components/game-distribution/useGameDistributionMediaReadUrl.ts
index b3f6ea476..68b2b1137 100644
--- a/src/components/game-distribution/useGameDistributionMediaReadUrl.ts
+++ b/src/components/game-distribution/useGameDistributionMediaReadUrl.ts
@@ -1,17 +1,26 @@
 import { useEffect, useState } from 'react';
 
-import { getGameDistributionMediaReadUrl } from '../../services/gameDistributionClient';
+import {
+  getGameDistributionMediaReadUrl,
+  getOwnerGameDistributionMediaReadUrl,
+} from '../../services/gameDistributionClient';
 
 type GameDistributionMediaReadUrlOptions = {
   enabled?: boolean;
   expireSeconds?: number;
+  /**
+   * 作者自己的作品：传 gameId 后走 owner 作用域 `my-games/{gameId}/media/read-url`，
+   * 未发布 / 待审 / 被驳回的封面与截图也能换签；不传则走匿名公开读。
+   */
+  gameId?: string | null;
 };
 
 /**
  * 把游戏分发的封面/截图 objectKey 换成签名读地址。
  *
- * 游戏媒体落在项目快照桶、走 `GET /api/game-distribution/media/read-url`，与素材库
- * `/api/assets/read-url` 的 ACL 解耦；换签失败时保持空地址，由调用方回退占位。
+ * 游戏媒体落在项目快照桶、走 `GET /api/game-distribution/media/read-url`（作者自有走
+ * `my-games/{gameId}/media/read-url`），与素材库 `/api/assets/read-url` 的 ACL 解耦；
+ * 换签失败时保持空地址，由调用方回退占位。
  */
 export function useGameDistributionMediaReadUrl(
   objectKey: string | null | undefined,
@@ -19,6 +28,7 @@ export function useGameDistributionMediaReadUrl(
 ) {
   const enabled = options.enabled !== false;
   const normalizedKey = objectKey?.trim() ?? '';
+  const resolvedGameId = options.gameId?.trim() ?? '';
   const shouldResolve = enabled && Boolean(normalizedKey);
   const [resolvedUrl, setResolvedUrl] = useState('');
   const [isResolving, setIsResolving] = useState(shouldResolve);
@@ -33,7 +43,14 @@ export function useGameDistributionMediaReadUrl(
     let cancelled = false;
     setResolvedUrl('');
     setIsResolving(true);
-    getGameDistributionMediaReadUrl(normalizedKey, options.expireSeconds)
+    const resolve = resolvedGameId
+      ? getOwnerGameDistributionMediaReadUrl(
+          resolvedGameId,
+          normalizedKey,
+          options.expireSeconds,
+        )
+      : getGameDistributionMediaReadUrl(normalizedKey, options.expireSeconds);
+    resolve
       .then((nextUrl) => {
         if (!cancelled) setResolvedUrl(nextUrl);
       })
@@ -47,7 +64,7 @@ export function useGameDistributionMediaReadUrl(
     return () => {
       cancelled = true;
     };
-  }, [normalizedKey, options.expireSeconds, shouldResolve]);
+  }, [normalizedKey, resolvedGameId, options.expireSeconds, shouldResolve]);
 
   return {
     resolvedUrl,
diff --git a/src/services/gameDistributionClient.test.ts b/src/services/gameDistributionClient.test.ts
index f26ec2ac3..f3bffe330 100644
--- a/src/services/gameDistributionClient.test.ts
+++ b/src/services/gameDistributionClient.test.ts
@@ -15,6 +15,7 @@ import {
   getGameDistributionMediaReadUrl,
   getGameVersion,
   getMyGameReview,
+  getOwnerGameDistributionMediaReadUrl,
   listGameReviews,
   listGames,
   listMyGames,
@@ -785,4 +786,37 @@ describe('gameDistributionClient 发布媒体 multipart', () => {
       '缺少游戏媒体标识',
     );
   });
+
+  it('作者自有作品媒体换签走 owner 路由并带 bearer', async () => {
+    setStoredAccessToken('owner-token', { emit: false });
+    const fetchMock = vi.fn().mockResolvedValue(
+      new Response(
+        JSON.stringify({
+          read: { signedUrl: 'https://oss.example.com/signed-owner' },
+        }),
+        { status: 200, headers: { 'Content-Type': 'application/json' } },
+      ),
+    );
+    vi.stubGlobal('fetch', fetchMock);
+
+    const signedUrl = await getOwnerGameDistributionMediaReadUrl(
+      'game-1',
+      'game-distribution/cover/alpha.png',
+      3600,
+    );
+
+    expect(fetchMock.mock.calls[0]?.[0]).toBe(
+      '/api/game-distribution/my-games/game-1/media/read-url?objectKey=game-distribution%2Fcover%2Falpha.png&expireSeconds=3600',
+    );
+    expect(fetchMock.mock.calls[0]?.[1]?.headers?.Authorization).toBe(
+      'Bearer owner-token',
+    );
+    expect(signedUrl).toBe('https://oss.example.com/signed-owner');
+    await expect(
+      getOwnerGameDistributionMediaReadUrl('   ', 'cover.png'),
+    ).rejects.toThrow('缺少作品标识');
+    await expect(
+      getOwnerGameDistributionMediaReadUrl('game-1', '   '),
+    ).rejects.toThrow('缺少游戏媒体标识');
+  });
 });
diff --git a/src/services/gameDistributionClient.ts b/src/services/gameDistributionClient.ts
index 1afa61b9a..fd9ab82b9 100644
--- a/src/services/gameDistributionClient.ts
+++ b/src/services/gameDistributionClient.ts
@@ -385,13 +385,7 @@ export async function getGame(gameId: string) {
   );
 }
 
-/**
- * 为公开的游戏封面/截图 objectKey 换取签名读地址。
- *
- * 游戏媒体落在项目快照桶、不经素材库 ACL，匿名可读；与 `/api/assets/read-url` 分离。
- * 换签失败不在这里吞掉，由调用方决定占位或回退。
- */
-export async function getGameDistributionMediaReadUrl(
+function buildGameDistributionMediaReadParams(
   objectKey: string,
   expireSeconds?: number,
 ) {
@@ -405,17 +399,59 @@ export async function getGameDistributionMediaReadUrl(
   ) {
     params.set('expireSeconds', String(Math.floor(expireSeconds)));
   }
+  return params;
+}
+
+function readGameDistributionMediaSignedUrl(
+  payload: GameDistributionMediaReadUrlResponse,
+) {
+  const read = payload.read ?? payload;
+  const signedUrl =
+    typeof read.signedUrl === 'string' ? read.signedUrl.trim() : '';
+  if (!signedUrl) throw new Error('游戏媒体访问地址缺失');
+  return signedUrl;
+}
+
+/**
+ * 为公开的游戏封面/截图 objectKey 换取签名读地址。
+ *
+ * 游戏媒体落在项目快照桶、不经素材库 ACL，匿名可读；与 `/api/assets/read-url` 分离。
+ * 换签失败不在这里吞掉，由调用方决定占位或回退。
+ */
+export async function getGameDistributionMediaReadUrl(
+  objectKey: string,
+  expireSeconds?: number,
+) {
+  const params = buildGameDistributionMediaReadParams(objectKey, expireSeconds);
   const payload = await requestJson<GameDistributionMediaReadUrlResponse>(
     `/media/read-url?${params.toString()}`,
     { method: 'GET', cache: 'no-store' },
     '读取游戏媒体地址失败',
     PUBLIC_GAME_REQUEST_OPTIONS,
   );
-  const read = payload.read ?? payload;
-  const signedUrl =
-    typeof read.signedUrl === 'string' ? read.signedUrl.trim() : '';
-  if (!signedUrl) throw new Error('游戏媒体访问地址缺失');
-  return signedUrl;
+  return readGameDistributionMediaSignedUrl(payload);
+}
+
+/**
+ * 为作者自己作品的封面/截图 objectKey 换取签名读地址。
+ *
+ * 走 owner 作用域 `GET /my-games/{gameId}/media/read-url`：未发布 / 待审 / 被驳回的作品也能
+ * 预览换签，判定只认「objectKey 命中本人作品当前行的媒体」；非本人或作品不存在返回 404。
+ */
+export async function getOwnerGameDistributionMediaReadUrl(
+  gameId: string,
+  objectKey: string,
+  expireSeconds?: number,
+) {
+  const normalizedGameId = gameId.trim();
+  if (!normalizedGameId) throw new Error('缺少作品标识');
+  const params = buildGameDistributionMediaReadParams(objectKey, expireSeconds);
+  const payload = await requestJson<GameDistributionMediaReadUrlResponse>(
+    `/my-games/${encodeURIComponent(normalizedGameId)}/media/read-url?${params.toString()}`,
+    { method: 'GET', cache: 'no-store' },
+    '读取作品媒体地址失败',
+  );
+  return readGameDistributionMediaSignedUrl(payload);
 }
 
 /**